/*当前屏幕宽度小于1000px大于600px时*/
.wrap{
	border: 1px solid green;
	width: 100%;
	padding: 10px 0;
}
.header{
	width: 100%;
	height: 100px;
	background: red;
	margin-bottom: 10px;
}
.sidebar{
	width: 200px;
	height: 100px;
	float: left;
	background: green;
}
.content{
	width: 100%;
	/*左边的sidebar已脱离稳定流 这里的content 100%并且margin-left 210px 形成自适应屏幕宽度*/
	margin-left: 210px;
	background: blue;
	height: 100px;
}